This is the documentation for Enlighten.
Convert to vanilla UE4
As .umap and .uasset files saved in Enlighten UE4 contain Enlighten-specific data, you can only use them with Enlighten UE4. To load these files in the vanilla UE4 distribution, you can back up and remove the Enlighten-specific data.
This is useful for:
- verifying whether certain behavior is specific to Enlighten, or also occurs in vanilla UE4
- reporting bugs in vanilla UE4 to Epic and provide them with assets to replicate the problem
Remove Enlighten-specific data
To remove Enlighten-specific data, use the EnlightenStripEnlightenData
 commandlet. The commandlet modifies the assets that the chosen asset depends on. It doesn't modify dependent assets in the Engine content folder.
<editor executable> <project name> -run=EnlightenStripEnlightenData <chosen asset file> [-AutoCheckOutPackages]
Parameters:
<editor executable>
This is the path path to your UE4 executable.<project name>
The first command line argument to UE4 is always the path to the project file containing the assets.-run=EnlightenStripEnlightenData
This is the commandlet that tells UE4 to remove the Enlighten-specific data.<chosen asset file>
This argument to the above commandlet is the asset file to operate on. Use the full path to either a .umap or .uasset file.[-AutoCheckOutPackages]
If the assets are read-only because the project is configured to use Perforce, the EnlightenStripEnlightenData
 commandlet reports an error. Either make the asset files writable on disk, or specify the optional -AutoCheckOutPackages
 argument.
The following example command removes Enlighten-specific data from MyProject/Content/Maps/MyLevel.umap and all assets it depends on. If Perforce is configured for the project, the assets are automatically added to the default pending changelist.
 UE4Editor.exe MyProject -run=EnlightenStripEnlightenData /Game/Maps/MyLevel -AutoCheckOutPackages
This command modifies the asset files on disk. To avoid losing data, make sure you have a backup of the project content before using this command.
Create a streamlined project
The commandlet removes all references to Enlighten-specific data from the chosen asset file and dependent assets. This might leave unused empty .uasset files that previously contained Enlighten precompute data.
To remove all Enlighten-specific data or asset files:
- Make sure you have a backup of the project.
- Make all assets writable on disk.
- Run the commandlet for the chosen asset using the Enlighten UE4 editor build.
- Open the project in the vanilla UE4 editor build.
- In the content browser,Â
Migrate
 the chosen asset to a new empty project.
The resulting project contains only the files that the chosen asset depends on, and can be loaded in the vanilla UE4 editor.